# there was a blank in some columns. We removed them
movies_df.columns=[i.split()[0]+"_"+i.split()[1]  if len(i.split())>1 else i for i in movies_df.columns]

# and remove paranthesis
movies_df=movies_df.rename(columns = {'Revenue_(Millions)':'Revenue_Millions'})
movies_df=movies_df.rename(columns = {'Runtime_(Minutes)':'Runtime_Minutes'})

movies_df.columns